JP2010267854A - Frame fixing structure of cabinet for accommodating electric electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame fixing structure of a cabinet for accommodating electric electronic equipment, having improved strength of the entire cabinet by preventing a screw fixed portion of a vertical frame from damage even when vibration is applied owing to an earthquake. <P>SOLUTION: The frame fixing structure of a cabinet has a structure in which end surfaces of a vertical frame 1, a lateral frame 2 and a depth frame 3 abut to a corner member 20 and fixed with screws from the corner member side, wherein screw fixing portions 4, 5 between the vertical frame 1 and the corner member 20 are disposed on both sides sandwiching a straight line OP drawn from a center point O to each of the corners of the cabinet in plan view of the cabinet. With this configuration, even if vibration in the corner direction is applied, the four screws 21 support the vertical frame 1 to improve the earthquake resistance. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a frame fixing structure for an electrical / electronic equipment storage cabinet comprising a vertical frame, a horizontal frame, and a depth frame.

  A cabinet used as a box for storing electrical and electronic equipment generally has a structure in which a vertical frame, a horizontal frame, and a depth frame are combined in a rectangular parallelepiped shape, and each corner portion is connected and fixed by a corner member. Patent document 1 shows an example, and each end of a vertical frame, a horizontal frame, and a depth frame is brought into contact with a corner member, and each end surface is fixed by screwing from the corner member side.

  As shown in FIG. 2 of Patent Document 1, the corner member is formed with screw holes in three directions of XYZ perpendicular to each other, and each frame is fixed by one screw. However, in order to improve the strength of the entire cabinet in consideration of earthquake resistance and the like, such a conventional structure has not been sufficient. In other words, the cabinet is usually installed with the bottom fixed by anchor bolts, etc., and the upper part will vibrate in the horizontal direction when subjected to vibrations such as earthquakes. Is a problem. In the conventional structure in which the vertical frame is fixed to the corner member by a single screw, the load is concentrated on the single screw, so that the screw fixing portion may be broken.

JP-T 8-506476 (FIG. 2)

  The present invention solves the above-mentioned conventional problems, prevents damage to the screw fixing portion of the vertical frame even when subjected to vibration due to an earthquake or the like, and can increase the strength of the entire cabinet, which can increase the strength of the entire cabinet. An object of the present invention is to provide a frame fixing structure.

  The present invention made to solve the above problems is a cabinet frame fixing structure in which each end face of a vertical frame, a horizontal frame, and a depth frame is brought into contact with a corner member, and each end face is screwed from the corner member side. Each frame is made of extruded frame material, and the screw fixing parts of each vertical frame and each corner member are arranged on both sides that sandwich the radiation from the center point when the cabinet is viewed in plan view. It is characterized by this.

  As in claim 2, the screw fixing portions of the vertical frames and the corner members may be arranged on both sides of a straight line drawn from the center point when the cabinet is viewed in plan to each corner of the cabinet. it can.

  According to a third aspect of the present invention, the vertical frame is made of an extruded material having an L-shaped cross section, and is provided with a screw fixing portion on each side of the L shape, and an internal space is formed at the inner corner of the cabinet. It is preferable to provide a device mounting groove or hole on the facing surface.

  Further, as in claim 4, each lower corner member has an anchor bolt insertion hole, and the vertical frame and each corner member are arranged on both sides of a line connecting the anchor bolt insertion hole and the corner portion of the vertical frame. It is preferable to have a structure in which screw fixing portions are arranged.

  According to a fifth aspect of the present invention, the vertical frame includes a vertical groove that opens in a plane parallel to the horizontal frame and a vertical groove that opens in a plane inclined in a direction away from the corner at a corner portion of the cabinet. It is preferable.

  In the frame fixing structure of the cabinet for storing electrical and electronic equipment according to the present invention, the screw fixing portions of each vertical frame and each corner member are respectively arranged on both sides sandwiching radiation from the center point when the cabinet is viewed in plan view. Therefore, the fixing strength of the vertical frame can be increased as compared with the case of fixing with a single screw. In addition, when two screw fixing parts are arranged on this straight line, the stress generated along with the swing in the corner direction will concentrate on the two outer screw fixing parts. A significant increase in strength cannot be obtained. However, according to the present invention, the vibration in the surface direction is supported by the four outer screws, and the vibration in the corner direction can be supported by the four screws, so that the earthquake resistance is improved. This point will be described in detail later.

  According to the third aspect of the present invention, if a device mounting groove or hole is provided on the surface of the vertical frame facing the internal space of the inner corner of the cabinet, it is convenient for mounting ducts and various devices. Further, as in claim 4, each lower corner member has an anchor bolt insertion hole, and the vertical frame and each corner member are arranged on both sides of a line connecting the anchor bolt insertion hole and the corner portion of the vertical frame. If the screw fixing part is arranged, the strength of the cabinet can be improved. Furthermore, if it is set as the structure of Claim 5, when connecting between the vertical frames of an adjacent cabinet with a connection metal fitting, force can be made to act in a mutually attracting direction and connection strength can be raised.

It is a whole perspective view of the cabinet for electrical and electronic equipment storage which shows embodiment of this invention. It is sectional drawing of a frame member. It is a perspective view which shows the relationship between a corner member and a vertical frame. It is a disassembled perspective view which shows the relationship between a corner member and a vertical frame. It is a bottom view which shows the relationship between a corner member and a vertical frame. It is explanatory drawing which planarly viewed the cabinet. It is explanatory drawing of an effect | action of this invention. It is sectional drawing of the frame member of other embodiment. It is explanatory drawing which shows a lower corner member. It is explanatory drawing of the connection state of a cabinet.

Embodiments of the present invention will be described below.
As shown in FIG. 1, in the present invention, four vertical frames 1, four horizontal frames 2, and four depth frames 3 are combined in a rectangular parallelepiped shape to form a skeleton of a cabinet for storing electrical and electronic equipment. In this embodiment, the frame member constituting each frame is an extruded aluminum material.

  FIG. 2 is a cross-sectional view of a frame member constituting the vertical frame 1. The frame members constituting the horizontal frame 2 and the four depth frames 3 have a slightly different cross-sectional shape from that of the vertical frame 1, but in the present invention, the cross-sectional shape of the vertical frame 1 is important. Only 1 will be described. When attention is paid to the frame member on the right side of FIG. 2, the whole has a L-shaped cross section. In addition, a screw fixing portion 4 is provided in each of the L-shaped sides, that is, in a substantially central portion of the vertical side, and a screw fixing portion 5 is provided in a portion closer to the tip than the center of the horizontal side. These screw fixing portions 4 and 5 are substantially circular holes of a size that can be threaded.

  Moreover, the cabinet outer surface plate 6 is attached along the L-shaped outer surface, and the inner space 7 is formed at the inner corner of the L-shape. A device mounting groove 8 is provided on the surface of the frame member facing the internal space 7. In addition, device mounting grooves 9 and 10 are also provided at each L-shaped tip. These are all used to fit a nut inside and attach a rail or various equipment to the inner surface of the cabinet. For this purpose, the entrance is narrow and the cross section is widened. Ducts and equipment can be attached to the internal space 7. The device mounting groove portions 9 and 10 are not limited to grooves, but may be holes.

  Further, in the corner portion P of the cabinet, there is provided a vertical groove 11 that opens to a surface parallel to the horizontal frame (the surface below the L-shaped horizontal side). Further, a protruding portion 12 having a triangular section that hangs down in the vertical direction is formed at the lower front end portion of the L-shaped horizontal side, and a vertical groove 13 that opens to a surface that is inclined in a direction away from the corner that is the inclined surface is formed. Is formed.

  As shown in FIGS. 3 and 4, the vertical frame 1 and the horizontal frame 2 and the depth frame 3 made of the frame member having the cross-sectional shape as described above contact each end face of the frame member to the corner member 20, The screws 21 are fixed to each other by screwing from the corner member 20 side toward the end face of the frame member.

  The corner member 20 is a block as shown in FIGS. 3 and 4, and is preferably a metal casting. A small protrusion 22 projects from the surface of the frame member 20 that contacts the end surface of the frame member, so that the end surface of the frame member can be positioned. The corner member 20 is formed with through holes in three directions (XYZ directions) so that screws 21 can be inserted. Among them, since there is one screw 21 screwed into the horizontal frame 2 and the depth frame 3, there are one through hole 23, 24 of the screw, but there are two vertical screws 21 screwed into the vertical frame 1. And two through holes 25 of the screw are formed. The positions of these through holes 25 coincide with the screw fixing portions 4 and 5 of the vertical frame 1.

  As shown in FIGS. 5 and 6, in the present invention, the screw fixing portions of the vertical frames 1 and the corner members 20 are straight lines drawn from the center point O in the plan view of the cabinet toward the corners of the cabinet. They were placed on both sides of the OP. With this arrangement, when the surface is shaken, the four screws 21 that are outside of the swinging direction among the eight screws support the vertical frame 1 and the two screws on the straight line OP. There is no big difference from when I placed. However, in the case of receiving a swing in the corner direction, in the present invention, the four screws 21 of ABCD support the vertical frame 1 as shown in FIG. 7A, but the straight line OP as shown in FIG. Even if two screws are arranged on the top, the load concentrates on the two screws of the outer ac, and the inner screw bd cannot receive the load effectively. Therefore, the seismic resistance of the cabinet against the shaking in the corner direction is improved.

  In this embodiment, the corner P of the straight line OP that faces each corner of the cabinet is described as a corner of the cabinet outer plate 6 that is a cabinet door or a side panel, but the corner portion of the present invention has a broad meaning. Corner member in a corner member that receives the load of the vertical frame in a narrow sense, where the outer surface including the protruding part of the vertical frame intersects, where the door of the vertical frame intersects the parallel surface and the parallel surface of the side panel And all corners at the joint surface between the vertical frame and the vertical frame.

  Next, an embodiment will be described with reference to FIG. In this embodiment, it is one side of a straight line OP connecting the center point O of the cabinet and the corner portion P, but provided with screw fixing portions of vertical frames and corner members on both sides of the radiation L from the center point O of the cabinet. It is. Therefore, as described with reference to FIG. 7, the load can be effectively received with four screws against the shaking in the corner direction of the cabinet. As described above, since the screw fixing portions of the vertical frames and the corner members are arranged on both sides of the radiation from the center point when the cabinet is viewed in plan, the present invention can be used even when the corner direction is shaken. Four screws support the vertical frame, improving earthquake resistance.

  Moreover, as shown in FIG. 9, the lower corner member 20 is provided with an anchor bolt insertion hole 26 on the inner side. And it is preferable to arrange | position the screw fixing | fixed part of the vertical frame 1 and the corner member 20 on the both sides of the line which connects this anchor bolt insertion hole 26 and the corner part P of the vertical frame 1. FIG. The anchor bolt mounting piece 27 is integrated with the lower corner member 20 by the anchor bolt inserted through the anchor bolt insertion hole 26. For this reason, since the anchor bolt insertion hole 26 becomes a fixing point of the vertical frame 1, if screw fixing portions are arranged on both sides of the line connecting the anchor bolt insertion hole 26 and the corner portion P of the vertical frame 1, the vibration in the surface direction is shaken. The screw 21 effectively acts both when receiving the vibration and when receiving the vibration in the corner direction. The screw fixing portion serves as a through hole 25 of the screw 21 as the corner member 20.

  When two cabinets are connected to each other, as shown in FIG. 10, the connection metal fitting 40 is connected to the outside of the corner member 20 for connection, but the vertical frame 1 is parallel to the horizontal frame 2 at the corner of the cabinet. If the shape is provided with the vertical groove 11 opening in the surface and the vertical groove 13 opening in the surface inclined in the direction away from the corner, a force can be applied to the connecting metal fitting 40 in the direction attracting each other. Can be increased.

DESCRIPTION OF SYMBOLS 1 Vertical frame 2 Horizontal frame 3 Depth frame 4 Screw fixing | fixed part 5 Screw fixing | fixed part 6 Cabinet outer surface board 7 Internal space 8 Equipment mounting groove 9 Equipment mounting groove 10 Equipment mounting groove 11 Vertical groove 12 Projection 13 Vertical groove 20 Corner Member 21 Screw 22 Small protrusion 25 Through hole 26 Anchor bolt insertion hole 27 Anchor bolt mounting piece 40 Connecting bracket

Claims (5)

  This is a cabinet frame fixing structure in which each end face of the vertical frame, horizontal frame, and depth frame is brought into contact with the corner member, and each end face is screwed from the corner member side, and each frame is constituted by an extruded frame material. The frame fixing of the electric and electronic equipment storage cabinet is characterized in that the screw fixing portions of each vertical frame and each corner member are respectively arranged on both sides sandwiching radiation from the center point when the cabinet is viewed in plan view. Construction.   2. The screw fixing portion between each vertical frame and each corner member is disposed on both sides of a straight line drawn from a center point when the cabinet is viewed in plan to each corner of the cabinet. The frame fixing structure of the cabinet for electrical and electronic equipment storage.   The vertical frame is made of an extruded material having an L-shaped cross section, and is provided with screw fixing portions on each side of the L shape, and an internal space is formed at the inner corner of the cabinet, and a device mounting groove portion or a surface facing this internal space 2. A frame fixing structure for an electric and electronic equipment storage cabinet according to claim 1, wherein the frame is provided with holes.   Each lower corner member has an anchor bolt insertion hole, and screw fixing portions of the vertical frame and each corner member are arranged on both sides of a line connecting the anchor bolt insertion hole and the corner portion of the vertical frame. The frame fixing structure of the cabinet for electrical and electronic equipment storage according to claim 1.   The vertical frame includes a vertical groove that opens in a plane parallel to the horizontal frame and a vertical groove that opens in a plane inclined in a direction away from the corner at a corner portion of the cabinet. The frame fixing structure of the cabinet for electrical and electronic equipment storage as described.

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